Improved carriage-hub



' A. s. WO0DWARD..

I Wheel Hub.

.No. 94.372. Patented Aug. 31. 1869.

'Fig. 2* E Fig. 5 F29 4 Fig. 3

that some paint dtihlinr.

A. S. WOODWARD, OF PEPPERELL, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND H. A. PARKER, OF SAME PLACE.

Letters Patent No. 94,372,"dated August 31, 1869.

IMPROVED CARRIAGE-HUB.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, A. Swoonwann, of Pepperell, in the county of Middlesex, and State of Massachusetts, have invented a new and useful Improvement in Wheel-Hubs; and I do hereby declare that the following is a full, clear, aiid exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of 'this specification.

This invention relates to a new and useful improvement in metallic hubs for carriage, wagon, and other wheels, and consists in forming a hollow or shell hub, cast in a single piece, thereby making it light, without the use of bolts.

In the accompanying plate of drawings- 1 Figure 1 represents a longitudinal central section of the hub.

Figure 2 represents a sectional top view.

Figure 3 also shows a sectional top view, with strips of wood or elastic material betweenthe spokes.

Figure 4 isa section of the same, through the line Figures 5 and 6 are side views of spokes, showing the shoulders of the tenons.

Figures 7 and 8 are edge views of the same.

Similar letters of reference indicate corresponding parts.

A is the hub, which is of cast-metal, in a single piece, chambered out, as seen at B, so as to make the hub light, and thus dispense with the use of bolts or screws.

For the purpose of relieving. the shoulders of the spokes, I place pieces of wood, rubber, gutta-percha, or other elastic or flexible material, between the spokes, as seen at 0, figs. 3 and 4.

The bridges between the spoke-mortisesare cut down, either in casting or afterward, so that such pieces are flush with the surface, as seen in fig. 4, when the hub is complete.

When the wheel is so constructed that the shoulders of the spokes are driven in direct contact with the metal, I enlarge the top of the mortise, so as to receive the should'rs,-as indicated in fig.'2, and I make such enlargedportion of the mortise in any desired form, so as to receive shoulders of various designs, as seen in the figures of the spokes in the drawing.

' I do not confine myself to any one particular form of shoulder, nor. to any variation from the ordinary square shoulder; out by sinking the shoulders of the spoke into the hub, substantially as shown, the strength and'dnrability of the wheel are increased.

Nor do I confine myself to the use of wood or othermaterial between the spokes, (other than the metal of the hub,) although some slight flexibility at that point materially relieves the spoke, and protects the shoulder when it is unduly strained.

My main object i s tofurnish ametallic hub for wheels, made in one piece, so that it may be of the most durable kind, while the cost ofmanilfacture shall be. greatly reduced from that of the ordinary cast hub.

Having thus described my invention,

I claim as new, and desire to secure by Letters Patent--' The metallic hub A, cast in one piece, with the chamber B extending from end to end thereof, and communicating with the openings for the spokes through the outer shell,'as herein described, for the.

purpose specified.

- A. S. 'WOODWABD, \Vitnesses 0. I FRENCH, CHAS. F. PARKER. 

